Same HTML structure bad for seo?

I justed started to build a seo template and I am asking myself whether I can use it more than once, like (to be crazy) hundreds / thousands times, without getting a negative seo "score"? Btw it's done with bootstrap...

Not sure if I understand what you mean. You got an example of what type of structure you're talking about? URL structure?

If you're talking about the actual HTML within the source code, then no there shouldn't be any problem as long as the content on the page, contained within the <body></body> tags is reasonably unique. Main issue you would want to avoid is a duplicate content penalty, so look out for that. If you're content is unique, you'll be alright in my opinion.

Don't worry about it. The important thing is to have semantic HTML that Google can easily parse. As long as your actual content is unique, it's fine to have the HTML structure the same. Thousands of websites on the internet that rank well share the same structure. All of my sites are based off my own custom HTML template and rank fine.

HTML5 (W3C Validated) is SEO friendly code ^^ since you can use <article> tags etc which help Google segment your content.

Using the same template is fine, you should get any penalty but of course the content needs to be unique. There are tons of WordPress websites using a theme the same as 1000's of other people and they rank perfectly well.

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